Process for producing an alloy



?atented June 15; 1926.

some stores tec ies:

PATENT denies.v

' THOMAS H. REIGHAEIL OF TARENTUM, FENNSYLVANIA.

2T0 Drawin g.

The invention relates to improvements in a. ductile alloy and the process of producing the same.

It is an object of the invention to provide an alloy which is exceedingly ductile, one

which is not hard and brittle so as to readily chip or break, which is one of the disadvaxn tages the present day. alloy contains.

My invention is based upon the discovery that where a flux is added to 9, mass of molten copper with a small quantity of alu minuni, an alloy product is produced which is very tough and ductile, differing materially from the hard and brittle alloy products now manufactured.

One of the essential "features of this invention resides in the introduction of a fluxing agent to the copper, the properties'of which fiuxing agent are set forth hereinafter.

In carrying out my process and to produce, say, 50 pounds of the ductilealloy, I take ap'proxinmtely 47 pounds of copper, which 1' subject to a temperature of 1200 dogs. F. This places the copper in a molten state, and while in this condition I add approximately 10 pounds of flux thereto. ploy not a commercialproduct. but \S u substance {which I have discovered that can tests foni'id 'to be as tollowsz 7 Per cent. Voter 11.54 Aluminum sulphate (Al OSUQQHH 14.25 Calcium sulohutc m 19.47 50 silicates of calcium, aluminum; meg nesiunn iron, manganese 24.58

be nnmuiactured from "furnace slag and possesses peculiar characteristics. This substance on physical examination cont-urns the following properties and has been found by me to he a most eliicient iiuxing nmteriel;

. Perceut. Fiilicuv (SiO l6.-'l-2- Alumina (A1 0 6.36 Lime (C210) 0}; 210G Magnesia (h'igU) l ccccccc l- 3.50 Ferric oxide (Feli ..l l .50

lviengunesc oxide (M110) .42 iiiniphuricnnhyilride (S0 39.1.0 ii'ater (H O) i 11.54 The-probable composition of this slug, based on this analysis. has been under chemical The flux I cur-- PROCESS FOR PRODUCING AN A'iLI-OY.

Application filed October as, 1922. Burial Nu. 581%,607.

The foregoing slag may he prepared in the following manner:

For instsnce, I may mix with one pound of oil of vitriol or sulphuric acid approxi mately 25 pounds of furnace slag whereupon this material is mixed with 10 pounds of boiling water. The material is thorou hly heated for av period of six hours after W ichthe Water is drawn ofi and a product forming this substance is produced. The product Y -1s generally of a light, crumbling nature,

hereinabove set forth.

This slag has been foundby me to have a very peculiar action upon the molten copper, and I Wish it to be understood that in using other types of known fiuxing material no successful results can be obtained. When the fluxin material is edded in the proportion mentioned, I then add about 2 pounds of aluminum, the mixture at this time being at a temperature of approximately 800 de s. F; and cherry red. I then spark the mass inserting into the cherry red material a red and when analyzed contains ingredients hot iron rod, the spark causing'the temper uture of the mass to rise to a point above 3000 dogs. F. This I attribute to the con;

sumption of some of the aluminum in the I material.

After the material has been thus treated,

After such The product made in accordance with this 7 process is one which is highly ductile, and by varying the amount of aluminum and sing the toughness or the ductility of the product must also be varied. That is .to say, if 1' add less ,e lu1.oinuni the product will more closely resemble the presentsdey bronze in View of the fact that it is hard and brittle. As the aluminum and the flux lnereases,

the product bQCOIHQSRIOZG dHGiIilB. Upon analysis, the product has been found to contain the following essential components in substantially the percentages given. It is these components of the product that give the same its decided advantages.

i i Per cent.

Coppernha 87. ()3 Silicon .38 Aluminum, approximately c 2. 15

Manganese 07 Having thus described my invention, what I claim is in a heated condition to generate heat to materially raise the temperature of the molten mass, and in thereafter allowing said mass to cool to 'form a ductile alloy.

' 2. The process for producing a ductile alloy, which consists in melting a supply of copper, in adding thereto while in a molten condition a fluxing agent obtained from the manufacture of furnace slag, in then introducing aluminum While the mass is in a substantially cherry red condition, sparking the same to cause combustion in the, aluminum and of materials in the slag to raise the temperature of the molten mass, and in' there- 'ai'ter melting and recovering the ductile alloy produced.

In testimony whereof l allix my signature.

' THOMAS H. REIGHARD. 

